Plate-puller



S. R.'GILMORE.

PLATE PULLER. AePLlcAtlon FILED JUNE 12,'1919.

ll. ,336,291 I Patented Aprf 6, 1920.

e9 J Q l5 *I J6 jl@ 5 i lf L ibn- V A9 Emunhu' SAMUEL R. GILlv'GRE, OF SEATTLE, iF-.rSING-TON.

PLATE-FULLER.

Specification of Letters aten't.

Patented Apr. (i, 19,20.

Application filed Enne 12, 1919. Serial No. 303,654.

.7b /f/ infima .it may concern:

Pi it known that I. SAMUEL Il. Gimronr., a ct tica izen of the United States, residing at le. in the county of King and State of ir ton, have invented certain new and Y iu lnantis in Sflate-lullcrs; and do hereby declare the following to be a clear, and exact description of the intic-n, such as will enable others skilled in the art to which it appertains to make and use the same.

yhis invention relates to improvements in devices to be utilized for drawing together resilient or other metallic plates which are to be overlapped and secured in such overlapping position b v suitable means and devices.

The object of the present'invention is to provide an extremely simple, inexpensive, practicable, durable and effective device adapted to be appropriately assembled or connected to the overlapping or adjacent ends of plates such for instance as steel plates used in the construction of tanks, buildings, walls, large .f'essels, marine ships and in any other construction or organization wherein comparatively heavy metallic plates are organized, the ends of the plates overlapping and being fastened as b v riveting, bolting or otherwise into a rigid structure.

lVith these and other objects in view as will be manifest to those versed in the art the invention consists in the construction, the combination, and in details and arrangement of the parts as more particularly described in the following specification in regard to the embodiment of the invention shown in the accompanying drawing wherein:

The ligure is a longitudinal, cental section through the device which is shown as applied to and in the operation of drawing together metallic plates.

In the erection of ships, metallic tanks. walls, partitions, platforms, decks, and various other structures, heavy steel plates are erected in substantial alinement with ends overlapping and adapted to be secured together, a pair of such plates being shown by the numerals being designated 2-2, these plates being apertured at 3 to receive a per manent fastening means not here shown. My device is provided for the purpose of facilitating the drawing of the plates to overlapping position and to that end I have evolved a device of simple and inexpensive construction shown as comprising a piece of metallic or other tubing 5 of suitable 'n and diameter and which may have id open for abutment against the adsurface of a plate as shown the other end of the tubing being provided with a Vtransverse bridge or cap 6 suitably held to the tube 5 as by friction or with the use of positive means if desired. The bridge or cap is provided with a female thread 7 through which extends a screw 8 the outer end ot which may bc provided with al suitable ever organization 9' and the inner end of the screw is shown as provided with a head or liangc 10 rotatively mounted in a collar or disk 11 through which the unthreadcd end portion of the screw 8 is turnable. If desired antifrietion means as ball bearings 12 may be utilized to reduce the frictifni between the head 10 4and the disk or collar 11. Disposed below the faces of the head 10 and the disk 11, in which the disk is countersunk there is a face plate 13 overlapping a lower disk or collar 1l, the upper and lower collars or disks 11 and 1loi the intermediate retaining plate l?) being held in assembled coaxial relation by means of bolts or other suitable fastenings 15. The lower disk or collar 14- is provided with a radial slot at 16 and a draw rod or bolt 17, having a head 18 countersunk in the collar 14. and extends below or through the collar 14 and its outer end is threaded as at 19 to receive a shoulder piece in the torni of a collar or nut 20 to be passed on the outer end of the draw rod 17. If desired a cotter or other keying device 21 may be passed through the outer end of the rod 17 to support or hold the shoulder. collar or piece 20 in place after the rod 17 has been passed through the two plates which are to be drawn together as shown in their relative dotted positions in the plates.

From the above it will be seen that by the use of a piece of common cylindrical material such as iron piping I can construct these devices in an extremely inexpensive manner and make them in large quantities with great rapidity and secure thereby an extremely rigid and durable form of device. In the use of the instrument the handle 9 is turned so as to advance the screw 8 through the bridge or cap G and project the outer end of the rod 17 to the desired degree beyond the open end of the body of the tube Then the Workman has but to project the exposed end of the draw rod through the apertures 3-3 of plates 2-2 to be drawn together and thereafter by reversing the direction of rotation of the handle 9 and the screw 8 the draw rod 17 is retracted into or toward the tube 5 and the plates 2 2 drawn into ,overlapping and abutting position. During this operation friction of the parts due to the rotation of the screw with respect to the collar structure ll-l is eliminated by the provision ot' the ball bearing 12.

lhat I claim is:

1. A plate puller comprising an abutment member formed of a piece of tubing, a bridge across one end thereof having a threaded bore, a slide operative in said tubing, a threaded member connected with said slide and having its threaded part engaging the threads in said bridge, a draw rod connected to said slide, and means for connecting said draw rod to the plates to be as'- sembled. 4

2. A plate puller comprising an abutment member formed of a piece of tubing, a cap mounted on one end of Said tubing and having a female threaded portion, a slide operative in said tubing, a threaded member connected with said slide having its threaded part engaging the threads in said cap, a draw rod connected to the slide, and means for connecting said draw rod to the plates to be assembled.

3. A tube provided with a cap having a threaded bore, a member adapted to slide within said tube, a member provided with threads co-mating with the threaded bore of the cap and rotatable Within said slidable member, a draw bolt mounted in said slidable member and extensible beyond the end of said tube.

SAMUEL R. GILMORE. 

